From: Sean Paul <seanpaul@xxxxxxxxxxxx>
I ran across this last week when I was trying to get this function to
work. It's useful to have the scale values in the log upon failure.
Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
---
drivers/gpu/drm/drm_atomic_helper.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 2c23a48482da..1725546d5105 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -758,7 +758,8 @@ int drm_atomic_helper_check_plane_state(struct drm_plane_state *plane_state,
hscale = drm_rect_calc_hscale(src, dst, min_scale, max_scale);
vscale = drm_rect_calc_vscale(src, dst, min_scale, max_scale);
if (hscale < 0 || vscale < 0) {
- DRM_DEBUG_KMS("Invalid scaling of plane\n");
+ DRM_DEBUG_KMS("Invalid scaling of plane (%d/%d)\n",
+ hscale, vscale);
drm_rect_debug_print("src: ", &plane_state->src, true);
drm_rect_debug_print("dst: ", &plane_state->dst, false);
return -ERANGE;
--
Sean Paul, Software Engineer, Google / Chromium OS
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